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What will be displayed after the following code is executed?
 
def pass_it(x, y):
z = x*y
result = get_result(z)
return(result)
def get_result(number):
z = number + 2
return(z)
num1 = 3
num2 = 4
answer = pass_it(num1, num2)
print(answer)
 
A)         12
B)         9
C)         14
D)         Nothing, this code contains a syntax error.
   
What will display after the following code is executed?
def main():
print("The answer is", magic(5))
def magic(num):
answer = num + 2 * 10
return answer
main()
 
A)         70
B) 25
C) 100
D) The statement will cause a syntax error.
   
What does the following statement mean?
 
num1, num2 = get_num()
 
A) The function get_num() is expected to return one value and assign it to num1 and num2.
B) This statement will cause a syntax error.
C) The function get_num() will receive the values stored in num1 and num2.
D) The function get_num() is expected to return a value for num1 and for num2.
   
It is recommended that programmers avoid using ________ variables in a program whenever possible.
 
A) keyword
B) global
C) string
D) local
   
The first line in a function definition is known as the function.
 
A) return
B) parameter
C) header
D) block
   
The ________ of a local variable is the function in which that variable is created.
 
A) definition
B) scope
C) global reach
D) space
   
A hierarchy chart shows all the steps that are taken inside a function.
             
True
False
   
The math function atan(x) returns one tangent of x in radians.
             
True
False
   
A set of statements that belong together as a group and contribute to the function definition is known as a
 
A) parameter
B) return
C) block
D) header
   
Different functions can have local variables with the same names.
             
True
False
   
What is a group of statements that exists within a program for the purpose of performing a specific task?
 
A) a subtask
B) a process
C) a function
D) a subprocess
   
The function header marks the beginning of the function definition.
             
True
False
   
What will be the output after the following code is executed?
 
def pass_it(x, y):
z = y**x
return(z)
num1 = 3
num2 = 4
answer = pass_it(num1, num2)
print(answer)
 
A) 81
B) 64
C) 12
D) None
   
What does the following program do?
 
import turtle
def main():
turtle.hideturtle()
square(100,0,50,'blue')
def square(x, y, width, color):
turtle.penup()
turtle.goto(x, y)
turtle.fillcolor(color)
turtle.pendown()
turtle.begin_fill()
for count in range(2):
turtle.forward(width)
turtle.left(90)
turtle.end_fill()
main()
 
A) It draws a blue square.
B) It draws a blue triangle.
C) It draws 2 blue lines.
D) Nothing since you cannot call a function with turtle graphics.
   
The Python library functions that are built into the Python ________ can be used by simply calling the required function.
 
A) interpreter
B) compiler
C) code
D) linker
   
One reason to store graphics functions in a module is so that you can import the module into any program
that needs to use those functions.
             
True
False
   
Python function names follow the same rules as those for naming variables.
             
True
False
   
A value-returning function is
 
A) called when you want the function to stop
B) a single statement that performs a specific task
C) a function that will return a value back to the part of the program that called it
D) a function that receives a value when called
   
What type of function can be used to determine whether a number is even or odd?
 
A) Boolean
B) math
C) even
D) odd
   
Unlike other languages, in Python the number of values a function can return is limited to one.
             
True
False
   
What does GIGO stand for?
Garbage In, Garbage Out
 
________ refers to the fact that computers cannot tell the difference between good data and bad data.
Garbage In, Garbage Out
 
What is a function?
A function is a group of statements that exist within a program for the purpose of performing a specific task.
 
What are the benefits of modularizing a program with Functions
Simpler Code, Code Reuse, Better Testing, Faster Development, Easier Facilitation of Teamwork
 
What is the purpose of a "break" statement in Python?
to exit the innermost loop
 
Function declarations in Python begin with what keyword?
def
 
Function parameters may be passed in a specified order
using names given in the declaration
 
What does the following code produce?    def myfunc(a, b, c='c'):
print(a, b, c)
 
In the process of ________, if the input is invalid, the program should discard it and prompt the user to enter the correct data.
Input validation
 
Validation loops are also known as ________.
Error traps
 
The ________ is the first input operation that appears before the validation loop.
Priming read
 
Given the following code in my script:
from foo import bar
how would I call the gamma function in the bar module?
bar.gamma
 
What is the purpose of struct.pack?
to pack binary data into a string
 
What is the meaning of "<" for pack and unpack?
it specifies little endian byte order
 
What is the difference between upper and lower case format specifiers for pack and unpack?
upper case specifiers are unsigned and lower case specifiers are signed
 
The format specifier "B" specifies how many bytes of data?
1
 
The file seek function is used to
go to another position in a file
 
What does the file tell function do?
reports the position in a file where the next file operation will occur
 
Which of the following is a way to tell if a file is open?
check its opened attribute
 
Files opened for writing are automatically truncated if they exist.
True
 
The exists function
is part of the sys module
 
Python cannot be used to read binary files.
False
 
What keyword is used to define a class?
class
 
The ___ keyword is used by a class to refer to a particular instance of that class.
self
 
Python does not support inheritance.
False
 
If    a = 'Bob'    b = 2
then   print(a+b)    produces
an error
 
Which of the following is the correct way to extend a class?
class derived(base):
 
Python supports private class instance variables.
False
 
The method used to create a new object of a particular class type is ____.
__init__
 
Python supports class variables that are shared with all instances of a particular class.
True
 
What is the difference between a list and a tuple?
a tuple is immutable and a list is not
 
The "Q" format specifier corresponds to what?
a 8-byte unsigned integer
 
What does "h" specify in pack and unpack?
a 2-byte signed integer
 
What does "I" mean in an unpack or pack format specifier?
an unsigned 4-byte integer
 
If          a = (1, 2, 3)   b = (4, 5, 6)
then     c = a + b   print(c)        produces
(1, 2, 3, 4, 5, 6)
 
What is the output of the following   struct.pack('Q', 1)
'\x01\x00\x00\x00\x00\x00\x00\x00'
 
What are the results of the following?   struct.unpack('HHHH', '\x01\x00\x00\x00\x00\x00\x00\x00')
(1, 0, 0, 0)
 
There is a pack/unpack format specifier for the 48-bit (6-byte) numbers used in NTFS.
False
 
What is a regular expression?
a way of specifying matching patterns
 
If a = (1, 2, 3) b = (4, 5, 6)
then c = a + b print(c) produces
(1, 2, 3, 4, 5, 6)
 
In a regular expression a period matches
any character except a newline by default
 
Python is named after
a British comedy group
 
Python can be used as
both a scripting and programming language
 
Python 3 is intentionally incompatible with Python 2. (T or F)
True
 
If
 
a = (1, 2, 3)
 
then
 
b = 2 * a
 
print (b)
 
produces
(1, 2, 3, 1, 2, 3)
 
If a = (1, 2) b = [ ]
Then b[0:] = a[0:] b.append(3) print(b) produces
[1, 2, 3]
 
Installing  Python on Linux is likely unnecessary if you want a 2.x version since most versions of
Linux pre-install Python
 
Python is a strongly typed language.
False
 
What is printed by the following script?
a = 2
b = 3
print (a/b)
0
 
If   a = 'Bob'   b = 2   then   print(a+b)   produces
an error
 
If      a = 'Bob'      b = 'Smith'     then     print (a+b)    produces
BobSmith
 
In a regular expression the asterisks (*) specifies
zero or more repetitions of the preceding RE
 
What is the meaning of the following regular expression?   abc{3}
abccc
 
What does the following regular expression match?   \.
a period
 
What matches the following regular expression?      [0-9a-fA-F]
any single hexadecimal digit
 
What is the difference between a list and a dictionary?
dictionaries may have non-integer keys
 
Dictionaries can store complex types, but every item must be of the same type.
False
 
The regular expression '([0-9]{1,3}\.){3}[0-9]{1,3}' will match IP addresses.
True
 
What matches the following regular expression?   a*
absolutely anything (including nothing at all)
 
If a = { }
then a['First'] = 'Bob' a['Last'] = 'Smith' print(a) produces
{'Last': 'Smith', 'First': 'Bob'}
 
If a = { 'First' : 'Bob', 'Last' : 'Smith' }
then print(a['Middle']) produces
an error
 
Regular expressions are a feature unique to Python (not present in other
scripting languages).
False
 
Exceptions are objects in Python.
True
 
Python does not allow you to create your own exceptions.
False
 
Code that might cause an exception to be raised
should be contained in a try block
 
If a = { 'First' : 'Bob' , 'Last' : 'Smith' } b = { 'First' : 'Sue' , 'Last' : 'Storm' }
then c = [a, b] print(c) produces
[{'Last': 'Smith', 'First': 'Bob'}, {'Last': 'Storm', 'First': 'Sue'}]
 
If x = 'There are %d types of people in the world.' % 10
then print(x) produces
There are 10 types of people in the world.
 
Python except blocks can handle more than one type of exception.
True
 
What is the purpose of a finally block?
for cleanup code that should always run whether or not there is an exception
 
It's best to use a priming read instead of a posttest loop because a posttest loop does not display an
error message when the user enters an invalid value.
True
 
The priming read appears inside the validation loop.
False
 
________ is the reading when an input operation attempts to read data, but there is no data to read.
Empty input
 
If a = 'Bob' b = 'Smith'
then print("Hello %s %s!" % (a, b)) produces
Hello Bob Smith!
 
If a = "Your change is %d" % 10.50
then print(a) produces
Your change is 10
 
print( "2" * 3) produces
222
 
print('Bob' 'Smith') produces the same output as
print('Bob'+'Smith')
 
What does print("%.2f" % 10.50) produce?
10.50
 
How do functions help you reuse code in a program.
If a specific operation is performed in several places in a program, a function can be written once
to perform that operation and then be executed any time it is needed.
 
How can functions make the development of multiple programs faster?
Functions can be written for the commonly needed tasks, and those functions can be incorporated
into each program that needs them.
 
How can functions make it easier for programs to be developed by teams of programmers.
different programmers can be assigned the job of writing different functions.
 
________ is the practice of anticipating errors that can happen while a program is running, and designing
the program to avoid those errors.
Defensive programming
 
What is the "in" operator used for in Python?
to determine if an item is in a list, tuple, or other iterable container
 
Two conditions that must both be true can be combined with ____ in Python.
"and"
 
Two conditions either of which must be true can be combined with ____ in Python.
or
 
The integrity of a program's output is only as good as the integrity of the program's ________.
Input
 
What sort of graph does the plot function produce?
Line Graph
 
Write the code to call the function named send_signal. There are no parameters for this function.
send_signal()
 
What is an argument?
An argument is any piece of data that is passed into a function when the function is called.
 
What is a parameter?
A parameter is a variable that receives an argument that is passed
 
Write the definition of a function printGrade, which takes one parameter containing a string value and
returns nothing. The function prints "Grade: " followed by the string parameter.
def printGrade(value):
print("Grade:", value)
 
A(n) ________ is any piece of data that is passed into a function when the function is called.
argument
 
What functions do you use to add labels to the x and y axes in a graph?
plt.xlabel(string)
plt.ylabel(string)
 
What is the meaning of a function argument preceded by a "*"?
it represents a variable number of parameters that are passed in as a tuple
 
Additional libraries must be installed to read and write files.
False
 
Assume the following statement calls the bar function to construct a bar chart with four bars. What color will the bars be?
plt.bar(left_edges, heights, color=('r', 'b', 'r', 'b')
Red, Blue, Red, Blue
 
To create a pie chart with the pie function, what argument must you pass?
A list of values
 
What command is used to load a Python module?
import
 
What function is used to list a module's functions?
dir
 
What file must be added to a directory in order for its contents to be
treated as a package by Python?
__init__.py
 
A ________ constant is a global name that references a value that cannot be changed.
global
 
The first line in the function definition is known as the function ________.
header
 
Different functions can have local variables with the same names.
True
 
A set of statements that belong together as a group and contribute to the function definition is known as a(n) ________.
Block
 
When a function is called by its name, then it is ________
executed
 
Python function names follow the same rules for naming variables.
True
 
A(n) ________ variable is created inside a function.
local
 
It is recommended that programmers should avoid using ________ variables in a program when possible.
global
 
A variable's ________ is the part of a program in which the variable may be accessed.
scope